Non-projecting hinge.



J. B. ANGELOVICH. NoNQPRolEcING HINGE.

APPLICATION FILED SEPT. I8. 1915. 1 ,172,512, Patented Feb. 22, 1916.

Ine/enten .I 1i. Jingelofwic/z,

By fn. M

.ttorney JOSEPH B. ANGELOVICH, 0F SAN FRANCISCO, CALIFORNIA.

NoN-raoJEcTING HINGE.

Specication of Letters Patent.

Patented Feb. 22, 1916.

Application led September 18, 1915. Serial No. 51,475.

To all whom t may concern: Be it known that I, JOSEPH R. ANGELO- vicH, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Non-Projecting Hinges,i of which the following is a specification.

The object of the present invention is to provide a non-projecting hinge, suitable for connecting the extension leaves of sewing machines, or like uses, in which it is desirable that the surfaces of the leaf and the table to which it is connected, or other such surfaces, shall be perfectly flat 'and freel `from projections or obstructions.

I have herein illustrated my invention as applied to the use above specifically referred to, but it is to be well understood that it is also applicable to many other uses.

In the accompanying drawing, Figure 1 is a front view of the table and extension leaf of a sewing machine in the collapsed position; Fig. 2 is a broken plan view of the same in the extended position; Fig. 3 -is a longitudinal verticalsection of the same in the latter position; Fig. 4 is a similar view in the former position; Figs. 5 and 6 are perspective views of companion parts of the hinge; Fig. 7 is a view similar to Fig. 3 of a modified form of the invention.

Referring to the drawing, 1 indicates a table, and 2 an extension leaf, of a sewing machine having beveled adjacent edges. These extension leaves are generally attached to the table by hinges having knuckles which are elevated above the plane of the upper surface of the leaf and table when extended, and this sometimes occasions annoyance, on account of forming an obstruction to the material on which the operator of the sewing machine is working,

and which is slid along the extension leaf and table. I avoid this annoyance by the use of the hinge shown in the drawing, in which 3, 4, indicate the hinge members, attached respectively to the table and to the extension leaf, so that the upper surfaces of said hinge members are, in the extended position, iiush with the surfaces of the table and extension leaf respectively. To the leaf of the hinge member 4 is hinged, by a downwardly extending knuckle 6, a slide piece 7, and the hinge member 3, instead of including part of the knuckle, is bent at right angles, as shown at 8, and extensions 9 of said bent portion are bent back on` themselves, as shown at 10, at a suicient distance from said portion 8 to form a slide- Vway 11 adapted to receive the slide piece 7,

9 of the hinge member 3, and said hinge member 3 is attached to the table with said bent portion and extension in said slot. The slide piece of the hinge is received within' the slideway, and it will then be seen from Fig. 3 that the upper Vsurfaces of the table andv extension leaf are fiat and free from upward projections by reason of the knuckleof the hinge member 4 being directed downwardly.4 How-` ever, on folding over the extension leaf 2 on the table 1, the knuckle of the hinge member.

4 can rise, as shown in Fig. 4, this being permitted by the slidable engagement of the slide piece 7 with the slideway 11.

In order to absolutely insure that ,the extension leaf, when extended, does not become loose by the slide piece pulling out of the slideway, when a great weight is placed on the outer end of the leaf, I extend a portion 12 from the knuckle ofthe hinge member 4 and bent at its lower end to form a hook 13, and one of said extensions 9 is cut away to form a passageway 14 to receive said hook and the portion 8 is formed with a slot 15 to receive the end of said hook and securely hold the parts together. This hook may be used or not, as preferred.

VIn Fig. 7 is shown a modication of the invention in which the hinge member 3 is secured to the under side of the table, which,`

and the extension leaf, have square adjacent edges. The edges of the vertical portion 8 are bent inwardly back on themselves to form the slideway.

It is to be understood that various changes I may be made in the construction and arrangement of the parts without departing from the spirit of my invention. For instance, it is not absolutely necessary that the hinge members 3, 4 should be secured to an upper, or any horizontal, surface of the table and leaf. Nor is it necessary thatthe hinge member 3 should bel secured' to the table and the hinge member 4 secured to the A the first named beveled edge When the leaf is extended, a hinge member secured to said table and having a slideway in said slot, and a hinge member secured to the surface of the extension leaf which is uppermost When said beveled edges 13o-engage, and having a doWn- Wardly extending knuckle adjacent to the table and a slide piece hinged by means of said knuckle and slidable in said slideway.

2. In combination with a table having a beveled edge and a slot therein adjacent to said beveled edge and an extension leaf also having a beveled edge 'adapted to engage the first-named beveled edge when the leafis extended, a hinge member vsecured to said table and having a slideway in said slot, and a hinge member secured to the surface of the extension leaf which is uppermost when said beveled edges co-engage, and having a downwardly extending knuckle adjacent to the table and a slide piece hinged by means of said knuckle and slidable in said slideway,`the part of the hinge member secured to the extension leaf having a rightangled extension beyond the knuckle and formed With a terminal hook, and one of the sides of the slidevvay having a hole to receive said hook when the extension leaf is extended.`

.Intestimony whereof I have hereunto set my hand inl the presence ofi-two subscribing Wltnesses.

JOSEPH R.. Ane'nnovion 

